Service manual

EPSON Stylus Photo R340/350 Revision A
Troubleshooting Troubleshooting 31
Table 1-13. Abnormal Noises are Produced during Operation
Occurrence
Timing
CR Position
Symptoms Failed Part Check Point Remedies
• Occurrence
Timing:
Anytime
• CR Position:
Anywhere
Printing operations are performed
properly, but abnormal noises are
produced after turning the power On and
during operations.
Carriage Unit 1. Check if the CR Guide Shaft is properly lubricated. 1. Wipe off the remaining oil on the CR Guide
Shaft and re-lubricate the shaft properly.
Ink System 1. Check if the Change Lever moves smoothly. 1. Replace the Ink System with a new one.
The bottom of the Carriage Unit comes
into contact with the surface of the Front
Frame.
EJ Frame Assy. 1. Check if the EJ Frame Assy. has warped upward. 1. Replace the EJ Frame Assy. with a new one.
The Carriage Unit hits against the Upper
Paper Guide while the Carriage Unit is
moving.
Upper Paper Guide 1. Check if the Upper Paper Guide has not come off the
Main Frame.
1. Install the Upper Paper Guide correctly.
Table 1-14. Print Quality Problems
Problems Description Failed Part Check Point Remedies
• Dot missing
Mixed colors,
Blank pages
Ink cannot be discharged from the Print
Head to the Cap.
Ink System
(Cap Unit)
1. Check the shielding rubber of the Cap Unit for any
damage or foreign material.
1. Remove the foreign material from the
shielding rubber.
* If the Ink System is damaged, replace it
with a new one.
2. Check if the Compression Spring 2.53 is properly
attached.
2. Replace the Ink System with a new one.
Shielding Rubber
Compression
Spring 2.53